WO2021098225A1 - 钕铁硼磁体材料、原料组合物及制备方法和应用 - Google Patents

钕铁硼磁体材料、原料组合物及制备方法和应用 Download PDF

Info

Publication number
WO2021098225A1
WO2021098225A1 PCT/CN2020/100588 CN2020100588W WO2021098225A1 WO 2021098225 A1 WO2021098225 A1 WO 2021098225A1 CN 2020100588 W CN2020100588 W CN 2020100588W WO 2021098225 A1 WO2021098225 A1 WO 2021098225A1
Authority
WO
WIPO (PCT)
Prior art keywords
content
boron magnet
iron boron
neodymium iron
magnet material
Prior art date
Application number
PCT/CN2020/100588
Other languages
English (en)
French (fr)
Inventor
付刚
黄佳莹
黄吉祥
权其琛
Original Assignee
厦门钨业股份有限公司
福建省长汀金龙稀土有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门钨业股份有限公司, 福建省长汀金龙稀土有限公司 filed Critical 厦门钨业股份有限公司
Priority to US17/639,366 priority Critical patent/US20220336127A1/en
Priority to KR1020227006968A priority patent/KR102589802B1/ko
Priority to JP2022513460A priority patent/JP7266751B2/ja
Priority to EP20889184.6A priority patent/EP4016557A4/en
Publication of WO2021098225A1 publication Critical patent/WO2021098225A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic

Definitions

  • the invention specifically relates to a neodymium iron boron magnet material, a raw material composition, and a preparation method and application.
  • the neodymium iron boron (NdFeB) magnet material with Nd 2 Fe 14 B as the main component has high remanence (Br), coercivity and maximum energy product (BHmax), comprehensive magnetism It has excellent performance and is used in wind power generation, new energy vehicles, inverter home appliances, etc.
  • the rare earth components in the neodymium iron boron magnet materials in the prior art are usually neodymium with only a small amount of praseodymium. Although there are a few reports in the prior art that replacing a part of neodymium with praseodymium can improve the performance of the magnet material, the degree of improvement is limited and there is still no significant improvement.
  • the neodymium iron boron magnet material with good coercivity and remanence properties in the prior art also needs to rely on a large amount of heavy rare earth element addition, and the cost is relatively expensive.
  • the technical problem to be solved by the present invention is to overcome the existing NdFeB magnet material after replacing the neodymium with part of the praseodymium, the coercivity and remanence of the magnet material still cannot be significantly improved, and it is still necessary to add more A large amount of heavy rare earth elements can make the performance of the magnet material more excellent. It provides a neodymium iron boron magnet material, a raw material composition, and a preparation method and application. The neodymium iron boron magnet material of the present invention can still significantly improve the performance of the neodymium iron boron magnet material without adding heavy rare earth elements.
  • the present invention solves the above technical problems through the following technical solutions.
  • the invention provides a raw material composition of a neodymium iron boron magnet material, which comprises the following components in terms of mass percentage:
  • R' 29.5-32.8%, the R'includes Pr and Nd; wherein, the Pr ⁇ 17.15%;
  • the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the content of Pr is preferably 17.15-30%, such as 17.15%, 18.15%, 19.15%, 20.15%, 21.15%, 22.85%, 23.15%, 24.15%, 25.15%, 26.5%, 27.15 % Or 30%; more preferably 21 to 26.5%, and the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the ratio of the total mass of the Nd to the R' is preferably less than 0.5, more preferably 0.04 to 0.44, such as 0.04, 0.07, 0.12, 0.14, 0.15, 0.18, 0.2, 0.21, 0.22, 0.27, 0.36, 0.37, 0.38, 0.4, 0.41, or 0.44.
  • the Nd content is preferably 15% or less, more preferably 1.5-14%, such as 1.5%, 2.45%, 3.85%, 4.05%, 4.55%, 4.85%, 5.85%, 6.65% , 6.85%, 8.35%, 11.65%, 11.85%, 12.85% or 13.85%, the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • said R' preferably further includes RH, said RH is a heavy rare earth element, and the type of said RH preferably includes one or more of Dy, Tb and Ho, more preferably Dy And/or Tb.
  • the quality of the RH and the R' is preferably less than 0.253, more preferably 0 to 0.08, such as 1/30.5, 1/32, 1.5/31.85, 2.3/31.9, 1/31, 1.2/30.2 , 1.4/30.4, 1.7/30.7, 1.9/31.9, 2.1/31.8, 2.3/31.5, 1/30.5, 1.7/31.7, 1.2/31.2, 1.4/31.4, 1.7/31.7, 0.5/31.5, 0.5/31.3, 1 /30.5 or 2.7/32.7.
  • the RH content is preferably 0.5 to 2.7%, such as 0.5%, 1%, 1.2%, 1.4%, 1.5%, 1.7%, 1.9%, 2.1%, 2.3% or 2.7%, more preferably It is 1 to 2.5%, and the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the content of Tb is preferably 0.5-2wt.%, such as 0.5%, 0.7%, 0.8%, 0.9%, 1%, 1.2%, 1.5%, 1.6%, 1.8 % Or 2%, the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the content of Dy is preferably less than 0.5wt.%, such as 0.1%, 0.2%, 0.3%, or 0.5%, and the percentage is based on the raw material combination of the neodymium iron boron magnet material The mass percentage of the total mass of the material.
  • the content of Ho can be a conventional addition amount in the art, usually 0.8-2.0%, for example 1%.
  • the content of Al is preferably 0.5 to 3 wt.%, such as 0.5%, 0.6%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.5%, 2.7%, 2.8%, 2.9% or 3%, the percentage refers to the amount of the neodymium iron boron magnet material The mass percentage of the total mass of the raw material composition.
  • the content of B is preferably 0.95% to 1.2%, such as 0.95%, 0.96%, 0.98%, 0.985%, 0.99%, 1%, 1.1% or 1.2%, and the percentage refers to the proportion of the neodymium The mass percentage of the total mass of the raw material composition of the iron-boron magnet material.
  • the content of Fe is preferably 60-67.55%, for example, 60.03%, 62.76%, 62.96%, 63.145%, 63.735%, 63.885%, 63.935%, 64.04%, 64.265%, 64.315%, 64.57%, 64.735%, 64.815%, 64.865%, 64.97%, 64.985%, 65.015%, 65.065%, 65.115%, 65.135%, 65.265%, 65.315%, 65.365%, 65.385%, 65.515%, 65.56%, 65.665% , 65.715%, 65.765%, 65.815%, 65.85%, 65.985%, 65.915%, 65.9655%, 65.995%, 66.065%, 66.115%, 66.165%, 66.215%, 66.315%, 66.465%, 66.515%, 66.665%, 66.715 %, 66.75%, 66.815%, 66.915%, 67.115%, 67.215%, 67
  • the raw material composition of the neodymium iron boron magnet material preferably further includes Cu.
  • the Cu content is preferably 0.1% to 1.2%, such as 0.1%, 0.35%, 0.4%, 0.45%, 0.48%, 0.5%, 0.55%, 0.6%, 0.65%, 0.7%, 0.75% %, 0.8%, 0.85%, 0.9%, 1% or 1.1%, the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably further includes Ga.
  • the content of Ga is preferably less than 0.45wt.%, such as 0.05%, 0.1%, 0.2%, 0.25%, 0.3%, 0.35% or 0.42%, and the percentage refers to the proportion of the neodymium iron boron The mass percentage of the total mass of the raw material composition of the magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably further includes N, and the type of N preferably includes Zr, Nb, Hf or Ti.
  • the content of Zr is preferably 0.05 to 0.5%, such as 0.1%, 0.2%, 0.25%, 0.28%, 0.3% or 0.35%, and the percentage refers to the raw material composition of the neodymium iron boron magnet material The mass percentage of the total mass.
  • the raw material composition of the neodymium iron boron magnet material preferably further includes Co.
  • the content of Co is preferably 0.5-3%, such as 1% or 3%, and the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material usually also includes O.
  • the content of O is preferably below 0.13%, and the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material can also include other elements commonly found in the art, such as one or more of Zn, Ag, In, Sn, V, Cr, Mo, Ta and W. kind.
  • the content of Zn may be a conventional content in the art, preferably 0.01 to 0.1%, for example, 0.02% or 0.05%, and the percentage refers to the total mass of the raw material composition of the neodymium iron boron magnet material Mass percentage.
  • the content of Mo may be a conventional content in the art, preferably 0.01-0.1%, such as 0.02% or 0.05%, and the percentage refers to the mass of the total mass of the raw material composition of the neodymium iron boron magnet material percentage.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Cu: ⁇ 1.2%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr It is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the content of Cu is 0.35-1.3%; more preferably, the R'also includes RH, which is the weight For rare earth elements, the content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Zr: 0.25 to 0.3%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the Pr The content is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of the RH is preferably 1 ⁇ 2.5%; the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Cu: ⁇ 1.2%; Zr: 0.25 to 0.3%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably Preferably, the content of Pr is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the content of Cu is 0.35-1.3%; more preferably, the R′ also includes RH, the RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Ga ⁇ 0.42%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5 %; The percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Ga ⁇ 0.42%; Cu: ⁇ 1.2%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, The content of Pr is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the content of Cu is 0.35-1.3%; more preferably, the R′ also includes RH The RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Ga ⁇ 0.42%; Zr: 0.25 to 0.3%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably ,
  • the content of the Pr is 17.15-30%; more preferably the content of the Al is 0.5-3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of the RH Preferably, it is 1 to 2.5%; the percentage is the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the raw material composition of the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.5-32.8%, the R'is a rare earth element, and the R 'Including Pr and Nd; wherein, the Pr ⁇ 17.15%; Al: ⁇ 0.5%; Ga ⁇ 0.42%; Cu: ⁇ 1.2%; Zr: 0.25 to 0.3%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr is 17.15-30%; more preferably, the content of Al is 0.5-3%; more preferably, the content of Cu is 0.35-1.3%; more preferably
  • the R' also includes RH, the RH is a heavy rare earth element, the content of the RH is preferably 1 to 2.5%, and the type of the RH is preferably Dy and/or Tb, wherein the Tb The content of is preferably 0.5-2%; the percentage is the mass percentage of the total mass of the raw material composition of the neody, and
  • the present invention also provides a method for preparing a neodymium iron boron magnet material, which is prepared by using the above-mentioned raw material composition of a neodymium iron boron magnet material containing praseodymium and aluminum.
  • the preparation method preferably includes the following steps: subjecting the molten liquid of the raw material composition of the neodymium iron boron magnet material to the melting and casting, hydrogen breaking, forming, sintering and aging treatment.
  • the molten liquid of the raw material composition of the neodymium iron boron magnet material can be prepared by a conventional method in the art, for example, smelting in a high-frequency vacuum induction melting furnace.
  • the vacuum degree of the melting furnace may be 5 ⁇ 10 -2 Pa.
  • the temperature of the smelting may be below 1500°C.
  • the casting operations and conditions can be conventional operations and conditions in the field, for example, in an Ar gas atmosphere (for example, under an Ar gas atmosphere of 5.5 ⁇ 10 4 Pa), at 10 2 °C/sec- Cool down at a rate of 10 4 °C/sec.
  • an Ar gas atmosphere for example, under an Ar gas atmosphere of 5.5 ⁇ 10 4 Pa
  • the operation and conditions of the hydrogen breaker can be conventional operations and conditions in the art.
  • it can be treated by hydrogen absorption, dehydrogenation, and cooling.
  • the hydrogen absorption can be performed under the condition of a hydrogen pressure of 0.15 MPa.
  • the dehydrogenation can be carried out under the conditions of raising the temperature while drawing a vacuum.
  • the pulverization process may be a conventional pulverization process in the field, such as jet mill pulverization.
  • the jet mill pulverization is preferably performed in a nitrogen atmosphere with an oxidizing gas content of 150 ppm or less.
  • the oxidizing gas refers to oxygen or moisture content.
  • the pressure in the pulverizing chamber of the jet mill is preferably 0.38 MPa; the time for the jet mill to pulverize is preferably 3 hours.
  • a lubricant such as zinc stearate
  • the added amount of the lubricant may be 0.10-0.15% of the weight of the powder after mixing, for example 0.12%.
  • the operation and conditions of the forming may be conventional operations and conditions in the art, such as a magnetic field forming method or a hot pressing and thermal deformation method.
  • the sintering operation and conditions can be conventional operations and conditions in the field.
  • it can be preheated, sintered, and cooled under vacuum conditions (for example, under a vacuum of 5 ⁇ 10 -3 Pa).
  • the preheating temperature is usually 300-600°C.
  • the preheating time is usually 1 to 2 hours.
  • the preheating is preheating at a temperature of 300°C and 600°C for 1 hour each.
  • the sintering temperature is preferably 1030 to 1080°C, for example, 1040°C.
  • the sintering time can be conventional in the field, for example, 2h.
  • Ar gas can be introduced before the cooling to make the gas pressure reach 0.1 MPa.
  • a grain boundary diffusion treatment is preferably performed.
  • the operation and conditions of the grain boundary diffusion can be conventional operations and conditions in the art.
  • the surface of the neodymium-iron-boron magnet material is vapor-deposited, coated, or sputtered to adhere a substance containing Tb and/or a substance containing Dy, and then performing diffusion heat treatment.
  • the Tb-containing material may be Tb metal, Tb-containing compound, for example, Tb-containing fluoride or alloy.
  • the Dy-containing substance may be Dy metal, Dy-containing compound, for example, Dy-containing fluoride or alloy.
  • the temperature of the diffusion heat treatment may be 800-900°C, for example 850°C.
  • the time of the diffusion heat treatment may be 12-48h, such as 24h.
  • the temperature of the secondary aging treatment is preferably 550-650°C, for example 550°C.
  • the heating rate to 550 to 650°C is preferably 3 to 5°C/min.
  • the starting point of the temperature increase may be room temperature.
  • the room temperature refers to 25°C ⁇ 5°C.
  • the present invention also provides a neodymium iron boron magnet material, which is prepared by the above-mentioned preparation method.
  • the present invention also provides a neodymium iron boron magnet material, which includes the following components in terms of mass percentage:
  • R' 29.4-32.8%, the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%;
  • Fe 60-68%; the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the content of Pr is preferably 17.12-30%, for example, 17.12%, 17.13%, 17.14%, 17.15%, 18.13%, 18.14%, 18.15%, 18.16%, 19.12%, 19.14%, 20.05%, 20.13%, 20.14%, 21.12%, 21.13%, 21.14%, 21.15%, 21.16%, 23.11%, 23.12%, 23.13%, 13.15%, 24.16%, 25.12%, 25.13%, 25.14%, 25.16% , 25.17%, 26.52%, 27.15% or 30%, and the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the Nd content is preferably 15% or less, more preferably 1.5-14%, for example, 1.5%, 2.45%, 3.83%, 3.84%, 3.86%, 3.89%, 4.03%, 4.52 %, 4.82%, 4.83%, 4.84%, 4.86%, 4.87%, 5.84%, 6.82%, 6.83%, 6.84%, 6.86%, 8.33%, 8.34%, 8.35%, 8.36%, 11.55%, 11.63%, 11.64%, 11.66%, 11.85%, 12.82%, 12.83%, 12.84%, 12.85%, 12.89%, 13.81%, 13.82%, 13.84% or 13.85%, the percentage is the mass of the total mass of the neodymium iron boron magnet material percentage.
  • said R' preferably further includes RH, said RH is a heavy rare earth element, and the type of said RH preferably includes one or more of Dy, Tb and Ho, more preferably Dy And/or Tb.
  • the quality of the RH and the R' is preferably ⁇ 0.253, more preferably 0-0.08.
  • the RH content is preferably below 3%, preferably 0.4 to 3%, for example, 0.48%, 0.51%, 0.56%, 1%, 1.02%, 1.03%, 1.04%, 1.19%, 1.21%, 1.25%, 1.42%, 1.43%, 1.52%, 1.7%, 1.71%, 1.72%, 1.91%, 2.13%, 2.33%, 2.69% or 2.71%, the percentages are based on the total neodymium iron boron magnet material The mass percentage of mass.
  • the content of Tb is preferably 0.5-2.1%, for example, 0.51%, 0.56%, 0.69%, 0.71%, 0.81%, 0.83%, 0.88%, 0.9%, 1%. %, 1.01%, 1.02%, 1.03%, 1.04%, 1.2%, 1.21%, 1.5%, 1.58%, 1.59%, 1.6%, 1.8%, 2.01% or 1.02%, and the percentage is based on the neodymium iron boron magnet The mass percentage of the total mass of the material.
  • the content of Dy is preferably 0.51% or less, preferably 0.1 to 0.51%, for example, 0.11%, 0.12%, 0.13%, 0.19%, 0.21%, 0.22% , 0.23%, 0.29%, 0.31%, 0.32%, 0.48%, 0.49% or 0.51%, and the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the content of Ho can be a conventional addition amount in the art, usually 0.8-2%, for example 1%, and the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material .
  • the content of Al is preferably 0.48-3%, for example, 0.48%, 0.49%, 0.58%, 0.6%, 0.61%, 0.8%, 0.82%, 0.83%, 0.89%, 0.9%, 0.91%, 0.92%, 1.01%, 1.02%, 1.03%, 1.04%, 1.09%, 1.21%, 1.22%, 1.23%, 1.31%, 1.42%, 1.49%, 1.51%, 1.52%, 1.53%, 1.62% , 1.63%, 1.7%, 1.79%, 1.81%, 1.82%, 1.9%, 1.91%, 1.92%, 2.01%, 2.02%, 2.03%, 1.12%, 2.21%, 2.3%, 2.31%, 2.52%, 2.71 %, 2.91% or 2.98%, the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the content of B is preferably 0.95% to 1.2%, such as 0.951%, 0.962%, 0.981%, 0.982%, 0.983%, 0.984%, 0.985%, 0.986%, 0.99%, 0.998%, 1.03 % Or 1.11%, the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the Fe content is preferably 59.9 to 67.7%, such as 59.932%, 62.8%, 62.88%, 63.136%, 63.896%, 64.029%, 64.234%, 64.266%, 64.566%, 64.799%, 64.897%, 64.915%, 64.985%, 64.987%, 65.084%, 65.096%, 65.146%, 65.264%, 65.299%, 65.309%, 65.327%, 65.347%, 65.385%, 65.514%, 65.524%, 65.548%, 65.664% , 65.665%, 65.689%, 65.779%, 65.829%, 65.867%, 65.877%, 65.896%, 65.944%, 66.019%, 66.047%, 66.174%, 66.236%, 66.249%, 66.327%, 66.386%, 66.496%, 66.534 %, 66.964%, 66.
  • the neodymium iron boron magnet material preferably further includes Cu.
  • the content of Cu is preferably below 1.2%, such as 0.11%, 0.34%, 0.35%, 0.4%, 0.41%, 0.45%, 0.5%, 0.51%, 0.55%, 0.6%, 0.63% , 0.65%, 0.72%, 0.75%, 0.81%, 0.85%, 0.91%, 1.02%, 1.03%, 1.04% or 1.11%, more preferably 0.34-1.3%, and the percentage is based on the neodymium iron boron magnet material The mass percentage of the total mass.
  • the neodymium iron boron magnet material preferably further includes Ga.
  • the content of Ga is preferably below 0.42%, such as 0.05%, 0.1%, 0.2%, 0.23%, 0.25%, 0.251%, 0.31%, 0.34%, 0.36%, 0.41%, 0.42% , 0.43% or 0.44%, more preferably 0.25-0.42%, and the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably further includes N, and the type of N preferably includes Zr, Nb, Hf or Ti.
  • the content of Zr is preferably 0.05 to 0.5%, for example, 0.1%, 0.11%, 0.2%, 0.22%, 0.24%, 0.25%, 0.27%, 0.28%, 0.3%, 0.31%, 0.32% , 0.34%, 0.35%, 0.36%, 0.37% or 0.38%, and the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably further includes Co.
  • the content of Co is preferably 0.5-3.5%, for example 1% or 3.03%, and the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material usually also includes O.
  • the content of O is preferably below 0.13%, and the percentage refers to the mass percentage of the total mass of the raw material composition of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material may also include other elements commonly found in the art, such as one or more of Zn, Ag, In, Sn, V, Cr, Nb, Mo, Ta, and W.
  • the content of Zn may be a conventional content in the art, preferably 0.01-0.1%, for example, 0.03% or 0.04%, and the percentage refers to the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the content of Mo may be a conventional content in the art, preferably 0.01-0.1%, such as 0.02% or 0.06%, and the percentage refers to the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Cu: ⁇ 1.2%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr is 17.12 to 30 %; More preferably, the content of Al is 0.48 to 3%; more preferably, the content of Cu is 0.34 to 1.3%; more preferably, the R'also includes RH, and the RH is a heavy rare earth element, so The content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Zr: 0.25 to 0.3%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr is 17.12 to 30%; more preferably, the content of Al is 0.48 to 3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; The percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Cu: ⁇ 1.2%; Zr: 0.25-0.3%; B: 0.90-1.2%; Fe: 60-68%; more preferably, the The content of Pr is 17.12-30%; more preferably, the content of Al is 0.48-3%; more preferably, the content of Cu is 0.34-1.3%; more preferably, the R'also includes RH, and the RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Ga ⁇ 0.44%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the content of Pr is 17.12 to 30% ; More preferably, the content of Al is 0.48 to 3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of RH is preferably 1 to 2.5%; It accounts for the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Ga ⁇ 0.44%; Cu: ⁇ 1.2%; B: 0.90 to 1.2%; Fe: 60 to 68%; more preferably, the Pr The content is 17.15-30%; more preferably, the content of Al is 0.48-3%; more preferably, the content of Cu is 0.34-1.3%; more preferably, the R′ also includes RH, and the RH It is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; the percentage is a mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Ga ⁇ 0.44%; Zr: 0.25-0.3%; B: 0.90-1.2%; Fe: 60-68%; more preferably, the Pr
  • the content of RH is 17.12-30%; more preferably, the content of Al is 0.48-3%; more preferably, the R'also includes RH, the RH is a heavy rare earth element, and the content of the RH is preferably 1 to 2.5%; the percentage is the mass percentage of the total mass of the neodymium iron boron magnet material.
  • the neodymium iron boron magnet material preferably includes the following components in terms of mass percentage: R': 29.4-32.8%, the R'is a rare earth element, and the R'includes Pr and Nd; wherein, the Pr ⁇ 17.12%; Al: ⁇ 0.48%; Ga ⁇ 0.44%; Cu: ⁇ 1.2%; Zr: 0.25 ⁇ 0.3%; B: 0.90 ⁇ 1.2%; Fe: 60 ⁇ 68%; more
  • the content of Pr is 17.12-30%; more preferably, the content of Al is 0.5-3%; more preferably, the content of Cu is 0.34-1.3%; more preferably, the R' It also includes RH, the RH is a heavy rare earth element, the content of the RH is preferably 1 to 2.5%, the type of the RH is preferably Dy and/or Tb, and the content of the Tb is preferably
  • the ground is 0.5-2%; the percentage is the mass percentage of the total mass of the neodymium iron boron magnet
  • the present invention also provides a neodymium iron boron magnet material.
  • the ratio of the total mass of Pr and Al to the total mass of Nd and Al is ⁇ 1.0;
  • the ratio of the total mass of Pr and Al to the total mass of Nd and Al is ⁇ 0.1;
  • the composition of the neodymium iron boron magnet material is the composition of the neodymium iron boron magnet material mentioned above.
  • the grain boundary refers to the boundary between two crystal grains
  • the intergranular triangle region refers to the void formed by three or more crystal grains.
  • the invention also provides an application of the neodymium iron boron magnet material as an electronic component in a motor.
  • the reagents and raw materials used in the present invention are all commercially available.
  • the positive progress effect of the present invention lies in: adding praseodymium and aluminum to the neodymium iron boron magnet material in the prior art, although it will increase the coercivity, but at the same time will reduce the remanence.
  • the inventor found through a large number of experiments that a specific content of praseodymium and aluminum can produce a synergistic effect, that is to say, adding a specific content of praseodymium and aluminum at the same time can make the coercivity of the neodymium iron boron magnet have a more significant increase, and at the same time The remanence is only slightly reduced.
  • the coercive force and remanence of the magnet material are still relatively high.
  • Fig. 1 is an element distribution diagram of the neodymium iron boron magnet material of Example 11.
  • Example 2 is a diagram of the element distribution at the grain boundary of the neodymium iron boron magnet material of Example 11. 1 in the figure is a point taken by quantitative analysis at the grain boundary.
  • Fig. 3 is a diagram of the element distribution in the intercrystalline triangle region of the neodymium iron boron magnet material of Example 11. 1 in the figure is a point taken by quantitative analysis in the intercrystalline triangle region.
  • Table 1 Formula of raw material composition of neodymium iron boron magnet material (wt.%)
  • NdFeB magnet material containing praseodymium and aluminum is as follows:
  • Magnetic field forming process Using a right-angle orientation type magnetic field forming machine, the above-mentioned zinc stearate-added powder is formed into a side length at one time in an orientation magnetic field of 1.6T and a forming pressure of 0.35ton/cm 2 It is a 25mm cube; it is demagnetized in a 0.2T magnetic field after one-time forming. In order to prevent the molded body from being exposed to air, the molded body after the primary molding was sealed, and then a secondary molding machine (isostatic press) was used to perform secondary molding at a pressure of 1.3 ton/cm 2.
  • a secondary molding machine isostatic press
  • each compact is moved to a sintering furnace for sintering, sintered under a vacuum of 5 ⁇ 10 -3 Pa and maintained at a temperature of 300°C and 600°C for 1 hour; then at a temperature of 1040°C Sintering for 2 hours; then pass Ar gas to make the pressure reach 0.1 MPa, and then cool to room temperature to obtain a sintered body.
  • Aging treatment process the sintered body is heat-treated at 600°C for 3 hours in high-purity Ar gas, and then heated to 550°C at a heating rate of 3°C/min, and then taken out after cooling to room temperature.
  • the NdFeB magnet material of Example 50 is obtained by using the raw material composition of Example 1 by the Dy grain boundary diffusion method, and the preparation process is as follows:
  • the preparation of the sintered body numbered 1 in Table 1 according to Example 1 is first prepared to obtain a sintered body, which is first subjected to grain boundary diffusion, and then subjected to aging treatment.
  • the process of aging treatment is the same as that of Example 1, and the process of grain boundary diffusion is as follows:
  • the sintered body is processed into a magnet with a diameter of 20mm and a sheet thickness of less than 3mm.
  • the thickness direction is the direction of the magnetic field orientation.
  • the raw material prepared with Dy fluoride is used to spray and coat the magnet on the entire surface.
  • the magnet is dried, and the metal with Tb element is sputtered on the surface of the magnet in a high-purity Ar gas atmosphere, followed by diffusion heat treatment at 850°C for 24 hours. Cool to room temperature and get ready.
  • the NdFeB magnet material of Example 51 was obtained from the raw material composition of Example 1 by the Dy grain boundary diffusion method, and the preparation process was as follows:
  • the preparation of the sintered body numbered 1 in Table 1 according to Example 1 is first prepared to obtain a sintered body, which is first subjected to grain boundary diffusion, and then subjected to aging treatment.
  • the process of aging treatment is the same as that of Example 1, and the process of grain boundary diffusion is as follows:
  • the sintered body is processed into a magnet with a diameter of 20mm and a sheet thickness of less than 7mm.
  • the thickness direction is the direction of the magnetic field orientation.
  • raw materials made of Tb fluoride are used to spray and coat the magnet on the entire surface.
  • the magnet is dried, and the metal with Tb element is sputtered on the surface of the magnet in a high-purity Ar gas atmosphere, followed by diffusion heat treatment at 850°C for 24 hours. Cool to room temperature.
  • the magnetic properties and composition of the neodymium iron boron magnet materials prepared in each example and comparative example were measured, and the crystal phase structure of the magnet was observed by FE-EPMA.
  • Magnetic performance evaluation The magnet material uses the NIM-10000H BH bulk rare earth permanent magnet non-destructive measurement system of China Metrology Institute for magnetic performance testing. Table 2 below shows the magnetic performance test results.
  • FE-EPMA detection The neodymium iron boron magnet material of Example 11 was detected using a field emission electron probe microanalyzer (FE-EPMA) (JEOL, 8530F). The Pr, Nd, Al, Zr and O elements in the magnet material are analyzed, and the elements at the grain boundaries and intergranular triangle regions are quantitatively analyzed. Among them: the grain boundary refers to the boundary between two crystal grains, and the intergranular triangle area refers to the void formed by three or more crystal grains.
  • Pr and Nd exist in the grain boundaries in the form of rare earth-rich phases and oxides, which are ⁇ -Pr and ⁇ -Nd, Pr 2 O 3 , Nd 2 O 3 and NdO, except for Al
  • the grain boundary outside the main phase occupies a certain content of about 0.2 wt.%, for example, 0.19 wt.% in this embodiment.
  • Zr is dispersed throughout the region.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

一种钕铁硼磁体材料、原料组合物及制备方法和应用。其中，钕铁硼磁体材料的原料组合物，以质量百分比计，其包括如下含量的组分：R'：29.5～32.8％，所述R'包括Pr和Nd；其中，Pr≥17.15％；Al≥0.5％；B：0.90～1.2％；Fe：60～68％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。所述钕铁硼磁体材料在不添加重稀土元素的前提下，仍然可使得钕铁硼磁体材料的性能得到显著的提升。

Description

钕铁硼磁体材料、原料组合物及制备方法和应用 技术领域
本发明具体涉及钕铁硼磁体材料、原料组合物及制备方法和应用。
背景技术
以Nd 2Fe 14B为主要成分的钕铁硼(NdFeB)磁体材料，具有较高的剩磁(remanence，简称Br)、矫顽力和最大磁能积(maximum energy product，简称BHmax)，综合磁性能优良，应用在风力发电、新能源汽车、变频家电等方面。目前现有技术中的钕铁硼磁体材料中的稀土成分通常以钕为主，只少量的镨。现有技术中虽然有少量报道将镨替换一部分的钕可提高磁体材料的性能，但是提高的程度有限，仍然没有显著的提升。另一个方面，现有技术中矫顽力和剩磁的性能均较好的钕铁硼磁体材料，同时还需要依赖重稀土元素的大量添加，成本较为昂贵。
发明内容
本发明所要解决的技术问题在于克服了现有技术中钕铁硼磁体材料中将钕用部分的镨替代之后，磁体材料的矫顽力和剩磁仍然无法得到显著的提升，且仍然需要添加较多量的重稀土元素才能使得磁体材料的性能较为优异的缺陷。而提供了钕铁硼磁体材料、原料组合物及制备方法和应用。本发明的钕铁硼磁体材料在不添加重稀土元素的前提下，仍然可使得钕铁硼磁体材料的性能得到显著的提升。
本发明是通过如下技术方案解决上述技术问题的。
本发明提供了一种钕铁硼磁体材料的原料组合物，以质量百分比计，其包括如下含量的组分：
R’：29.5～32.8％，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；
Al≥0.5％；
B：0.90～1.2％；
Fe：60～68％；
百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述Pr的含量较佳地为17.15～30％，例如17.15％、18.15％、19.15％、20.15％、21.15％、22.85％、23.15％、24.15％、25.15％、26.5％、27.15％或30％；更佳地为21～26.5％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述Nd与所述R’的总质量的比值较佳地小于0.5，更佳地为0.04～0.44，例如0.04、0.07、0.12、0.14、0.15、0.18、0.2、0.21、0.22、0.27、0.36、0.37、0.38、0.4、0.41或0.44。
本发明中，所述Nd的含量较佳地在15％以下，更佳地为1.5～14％，例如1.5％、2.45％、3.85％、4.05％、4.55％、4.85％、5.85％、6.65％、6.85％、8.35％、11.65％、11.85％、12.85％或13.85％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述R’较佳地还包括RH，所述RH为重稀土元素，所述RH的种类较佳地包括Dy、Tb和Ho中的一种或多种，更佳地为Dy和/或Tb。
其中，所述RH和所述R’的质量比较佳地小于0.253，更佳地为0～0.08，例如1/30.5、1/32、1.5/31.85、2.3/31.9、1/31、1.2/30.2、1.4/30.4、1.7/30.7、1.9/31.9、2.1/31.8、2.3/31.5、1/30.5、1.7/31.7、1.2/31.2、1.4/31.4、1.7/31.7、0.5/31.5、0.5/31.3、1/30.5或2.7/32.7。
其中，所述RH的含量较佳地为0.5～2.7％，例如0.5％、1％、1.2％、1.4％、1.5％、1.7％、1.9％、2.1％、2.3％或2.7％，更佳地为1～2.5％，百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
当所述RH中含有Tb时，所述Tb的含量较佳地为0.5～2wt.％，例如0.5％、0.7％、0.8％、0.9％、1％、1.2％、1.5％、1.6％、1.8％或2％，百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
当所述RH中含有Dy时，所述Dy的含量较佳地在0.5wt.％以下，例如0.1％、0.2％、0.3％或0.5％，百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
当所述的RH中含有Ho时，所述Ho的含量可为本领域常规的添加量，通常为0.8～2.0％，例如1％。
本发明中，所述Al的含量较佳地为0.5～3wt.％，例如0.5％、0.6％、0.8％、0.9％、1％、1.1％、1.2％、1.3％、1.4％、1.5％、1.6％、1.7％、1.8％、1.9％、2.0％、2.1％、2.2％、2.3％、2.5％、2.7％、2.8％、2.9％或3％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述B的含量较佳地为0.95～1.2％，例如0.95％、0.96％、0.98％、0.985％、0.99％、1％、1.1％或1.2％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述Fe的含量较佳地为60～67.515％，例如为60.03％、62.76％、62.96％、63.145％、63.735％、63.885％、63.935％、64.04％、64.265％、64.315％、64.57％、64.735％、64.815％、64.865％、64.97％、64.985％、65.015％、65.065％、65.115％、65.135％、65.265％、65.315％、65.365％、65.385％、65.515％、65.56％、65.665％、65.715％、65.765％、65.815％、65.85％、65.985％、65.915％、65.9655％、65.995％、66.065％、66.115％、66.165％、66.215％、66.315％、66.465％、66.515％、66.665％、66.715％、66.75％、66.815％、66.915％、67.115％、67.215％、67.315％、67.4％、67.415％、67.515％或67.615％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料的原料组合物中较佳地还包括Cu。
本发明中，所述Cu的含量较佳地为0.1～1.2％，例如0.1％、0.35％、0.4％、0.45％、0.48％、0.5％、0.55％、0.6％、0.65％、0.7％、0.75％、0.8％、0.85％、0.9％、1％或1.1％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料较佳地还包括Ga。
本发明中，所述Ga的含量较佳地在0.45wt.％以下，例如0.05％、0.1％、0.2％、0.25％、0.3％、0.35％或0.42％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料的原料组合物较佳地还包括N，所述N的种类较佳地包括Zr、Nb、Hf或Ti。
其中，所述Zr的含量较佳地为0.05～0.5％，例如0.1％、0.2％、0.25％、0.28％、0.3％或0.35％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料的原料组合物中较佳地还包括Co。
本发明中，所述Co的含量较佳地为0.5～3％，例如1％或3％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料的原料组合物中通常还包括O。
其中，所述O的含量较佳地在0.13％以下，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料的原料组合物还可包括本领域常见的其他元素，例如Zn、Ag、In、Sn、V、Cr、Mo、Ta和W中的一种或多种。
其中，所述Zn的含量可为本领域常规的含量，较佳地为0.01～0.1％，例如，0.02％或0.05％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
其中，所述Mo的含量可为本领域常规的含量，较佳地为0.01～0.1％，例如0.02％或0.05％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Cu：≤1.2％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地所述Cu的含量为0.35～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更 佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地所述Cu的含量为0.35～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Ga≤0.42％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Ga≤0.42％；Cu：≤1.2％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地，所述Cu的含量为0.35～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Ga≤0.42％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述钕铁硼磁体材料的原料组合物，以质量百分比计，较佳地包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Ga≤0.42％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.5～3％；更佳地，所述Cu的含量为0.35～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％，所述RH的种类较佳地为Dy和/或Tb，其中，所述Tb的 含量较佳地为0.5～2％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明还提供了一种钕铁硼磁体材料的制备方法，其采用上述的含镨和铝的钕铁硼磁体材料的原料组合物制得。
本发明中，所述的制备方法较佳地包括以下步骤：将上述的钕铁硼磁体材料的原料组合物的熔融液经熔铸、氢破、成形、烧结和时效处理，即可。
本发明中，所述钕铁硼磁体材料的原料组合物的熔融液可通过本领域常规的方法制得，例如：在高频真空感应熔炼炉中熔炼，即可。所述熔炼炉的真空度可为5×10 -2Pa。所述熔炼的温度可为1500℃以下。
本发明中，所述的铸造的操作和条件可为本领域常规的操作和条件，例如，在Ar气气氛中(例如5.5×10 4Pa的Ar气气氛下)，以10 2℃/秒-10 4℃/秒的速度冷却，即可。
本发明中，所述的氢破的操作和条件可为本领域常规的操作和条件。例如，经吸氢、脱氢、冷却处理，即可。
其中，所述吸氢可在氢气压力0.15MPa的条件下进行。
其中，所述脱氢可在边抽真空边升温的条件下进行。
本发明中，所述氢破后还可按本领域常规手段进行粉碎。所述粉碎的工艺可为本领域常规的粉碎工艺，例如气流磨粉碎。所述气流磨粉碎较佳地在在氧化气体含量150ppm以下的氮气气氛下进行。所述氧化气体指的是氧气或水分含量。所述气流磨粉碎的粉碎室压力较佳地为0.38MPa；所述气流磨粉碎的时间较佳地为3h。
其中，所述粉碎后，可按本领域常规手段在粉体中添加润滑剂，例如硬脂酸锌。所述润滑剂的添加量可为混合后粉末重量的0.10～0.15％，例如0.12％。
本发明中，所述成形的操作和条件可为本领域常规的操作和条件，例如磁场成形法或热压热变形法。
本发明中，所述的烧结的操作和条件可为本领域常规的操作和条件。例如，在真空条件下(例如在5×10 -3Pa的真空下)，经预热、烧结、冷却，即可。
其中，所述预热的温度通常为300～600℃。所述预热的时间通常为1～2h。较佳地所述预热为在300℃和600℃的温度下各预热1h。
其中，所述烧结的温度较佳地为1030～1080℃，例如1040℃。
其中，所述烧结的时间可为本领域常规，例如2h。
其中，所述冷却前可通入Ar气体使气压达到0.1MPa。
本发明中，所述烧结之后、所述时效处理之前，较佳地还进行晶界扩散处理。
其中，所述的晶界扩散的操作和条件可为本领域常规的操作和条件。例如，在所述的钕铁硼磁体材料的表面蒸镀、涂覆或溅射附着含有Tb的物质和/或含有Dy的物质，经扩散热处理，即可。
所述含有Tb的物质可为Tb金属、含有Tb的化合物，例如含有Tb的氟化物或合金。
所述含有Dy的物质可为Dy金属、含有Dy的化合物，例如含有Dy的氟化物或合金。
所述扩散热处理的温度可为800-900℃，例如850℃。
所述扩散热处理的时间可为12-48h，例如24h。
本发明中，所述时效处理中，二级时效处理的温度较佳地为550～650℃，例如550℃。
本发明中，所述二级时效处理中，升温至550～650℃的升温速率较佳地为3～5℃/min。所述升温的起点可为室温。
本发明中，所述室温是指25℃±5℃。
本发明还提供了一种钕铁硼磁体材料，其采用上述的制备方法制得。
本发明还提供了一种钕铁硼磁体材料，以质量百分比计，其包括如下含量的组分：
R’：29.4～32.8％，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；
Al：≥0.48％；
B：0.90～1.2％；
Fe：60～68％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述Pr的含量较佳地为17.12～30％，例如，17.12％、17.13％、17.14％、17.15％、18.13％、18.14％、18.15％、18.16％、19.12％、19.14％、20.05％、20.13％、20.14％、21.12％、21.13％、21.14％、21.15％、21.16％、23.11％、23.12％、23.13％、13.15％、24.16％、25.12％、25.13％、25.14％、25.16％、25.17％、26.52％、27.15％或30％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述Nd的含量较佳地在15％以下，更佳地为1.5～14％，例如，1.5％、2.45％、3.83％、3.84％、3.86％、3.89％、4.03％、4.52％、4.82％、4.83％、4.84％、4.86％、4.87％、 5.84％、6.82％、6.83％、6.84％、6.86％、8.33％、8.34％、8.35％、8.36％、11.55％、11.63％、11.64％、11.66％、11.85％、12.82％、12.83％、12.84％、12.85％、12.89％、13.81％、13.82％、13.84％或13.85％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述R’较佳地还包括RH，所述RH为重稀土元素，所述RH的种类较佳地包括Dy、Tb和Ho中的一种或多种，更佳地为Dy和/或Tb。
其中，所述RH和所述R’的质量比较佳地＜0.253，更佳地为0～0.08。
其中，所述RH的含量较佳地在3％以下，较佳地为0.4～3％，例如，0.48％、0.51％、0.56％、1％、1.02％、1.03％、1.04％、1.19％、1.21％、1.25％、1.42％、1.43％、1.52％、1.7％、1.71％、1.72％、1.91％、2.13％、2.33％、2.69％或2.71％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
当所述RH中含有Tb时，所述Tb的含量较佳地为0.5～2.1％，例如，0.51％、0.56％、0.69％、0.71％、0.81％、0.83％、0.88％、0.9％、1％、1.01％、1.02％、1.03％、1.04％、1.2％、1.21％、1.5％、1.58％、1.59％、1.6％、1.8％、2.01％或1.02％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
当所述RH中含有Dy时，所述Dy的含量较佳地在0.51％以下，较佳地为0.1～0.51％，例如，0.11％、0.12％、0.13％、0.19％、0.21％、0.22％、0.23％、0.29％、0.31％、0.32％、0.48％、0.49％或0.51％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
当所述的RH中含有Ho时，所述Ho的含量可为本领域常规的添加量，通常为0.8～2％，例如1％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述Al的含量较佳地为0.48～3％，例如，0.48％、0.49％、0.58％、0.6％、0.61％、0.8％、0.82％、0.83％、0.89％、0.9％、0.91％、0.92％、1.01％、1.02％、1.03％、1.04％、1.09％、1.21％、1.22％、1.23％、1.31％、1.42％、1.49％、1.51％、1.52％、1.53％、1.62％、1.63％、1.7％、1.79％、1.81％、1.82％、1.9％、1.91％、1.92％、2.01％、2.02％、2.03％、1.12％、2.21％、2.3％、2.31％、2.52％、2.71％、2.91％或2.98％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述B的含量较佳地为0.95～1.2％，例如0.951％、0.962％、0.981％、0.982％、0.983％、0.984％、0.985％、0.986％、0.99％、0.998％、1.03％或1.11％，百分比为占所述钕 铁硼磁体材料总质量的质量百分比。
本发明中，所述Fe的含量较佳地为59.9～67.7％，例如为59.932％、62.8％、62.88％、63.136％、63.896％、64.029％、64.234％、64.266％、64.566％、64.799％、64.897％、64.915％、64.985％、64.987％、65.084％、65.096％、65.146％、65.264％、65.299％、65.309％、65.327％、65.347％、65.385％、65.514％、65.524％、65.548％、65.664％、65.665％、65.689％、65.779％、65.829％、65.867％、65.877％、65.896％、65.944％、66.019％、66.047％、66.174％、66.236％、66.249％、66.327％、66.386％、66.496％、66.534％、66.964％、66.699％、66.73％、66.847％、66.917％、67.029％、67.088％、67.115％、67.216％、67.224％、67.315％、67.426％、67.45％、67.526％、67.587％或67.607％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料中较佳地还包括Cu。
本发明中，所述Cu的含量较佳地在1.2％以下，例如0.11％、0.34％、0.35％、0.4％、0.41％、0.45％、0.5％、0.51％、0.55％、0.6％、0.63％、0.65％、0.72％、0.75％、0.81％、0.85％、0.91％、1.02％、1.03％、1.04％或1.11％，更佳地为0.34～1.3％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料较佳地还包括Ga。
本发明中，所述Ga的含量较佳地在0.42％以下，例如0.05％、0.1％、0.2％、0.23％、0.25％、0.251％、0.31％、0.34％、0.36％、0.41％、0.42％、0.43％或0.44％，更佳地为0.25～0.42％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料中较佳地还包括N，所述N的种类较佳地包括Zr、Nb、Hf或Ti。
其中，所述Zr的含量较佳地为0.05～0.5％，例如，0.1％、0.11％、0.2％、0.22％、0.24％、0.25％、0.27％、0.28％、0.3％、0.31％、0.32％、0.34％、0.35％、0.36％、0.37％或0.38％，百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料中较佳地还包括Co。
本发明中，所述Co的含量较佳地为0.5～3.5％，例如1％或3.03％，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料中通常还包括O。
其中，所述O的含量较佳地在0.13％以下，百分比是指占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
本发明中，所述的钕铁硼磁体材料还可包括本领域常见的其他元素，例如Zn、Ag、In、Sn、V、Cr、Nb、Mo、Ta和W中的一种或多种。
其中，所述Zn的含量可为本领域常规的含量，较佳地为0.01～0.1％，例如，0.03％或0.04％，百分比是指占所述钕铁硼磁体材料总质量的质量百分比。
其中，所述Mo的含量可为本领域常规的含量，较佳地为0.01～0.1％，例如0.02％或0.06％，百分比是指占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Cu：≤1.2％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.48～3％；更佳地所述Cu的含量为0.34～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.48～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.48～3％；更佳地所述Cu的含量为0.34～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥ 0.48％；Ga≤0.44％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.48～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Ga≤0.44％；Cu：≤1.2％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.15～30％；更佳地所述Al的含量为0.48～3％；更佳地，所述Cu的含量为0.34～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Ga≤0.44％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.48～3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明中，所述钕铁硼磁体材料，以质量百分比计，较佳地包括如下含量的组分：R’：29.4～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；Al：≥0.48％；Ga≤0.44％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；更佳地，所述Pr的含量为17.12～30％；更佳地所述Al的含量为0.5～3％；更佳地，所述Cu的含量为0.34～1.3％；更佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％，所述RH的种类较佳地为Dy和/或Tb，其中，所述Tb的含量较佳地为0.5～2％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
本发明还提供了一种钕铁硼磁体材料，在所述钕铁硼磁体材料的晶间三角区中，Pr和Al的总质量与Nd和Al的总质量的比值≤1.0；
在所述钕铁硼磁体材料的晶界处，Pr和Al的总质量与Nd和Al的总质量的比值≥0.1；
较佳地，所述钕铁硼磁体材料的组分为上述的钕铁硼磁体材料的组分。
本发明中，所述晶界处是指两个晶粒之间的界限，所述晶间三角区是指三个及三个以 上的晶粒所形成的空隙。
本发明还提供了一种所述钕铁硼磁体材料在电机中作为电子元器件的应用。
在符合本领域常识的基础上，上述各优选条件，可任意组合，即得本发明各较佳实例。
本发明所用试剂和原料均市售可得。
本发明的积极进步效果在于：现有技术中在钕铁硼磁体材料中添加镨和铝，虽然会增加矫顽力，但是同时会降低剩磁。发明人通过大量的实验发现，特定含量的镨和铝配伍可产生协同作用，也就是说，同时添加特定含量的镨和铝可使得钕铁硼磁体的矫顽力有更为显著的提升，同时剩磁也只有略微的降低。且本发明中的磁体材料在不添加重稀土元素的情况下，磁体材料的矫顽力和剩磁仍然较高。
附图说明
图1为实施例11的钕铁硼磁体材料的元素分布图。
图2为实施例11的钕铁硼磁体材料的晶界处元素分布图，图中的1为晶界处中定量分析所取的点。
图3为实施例11的钕铁硼磁体材料的晶间三角区的元素分布图，图中的1为晶间三角区中定量分析所取的点。
具体实施方式
下面通过实施例的方式进一步说明本发明，但并不因此将本发明限制在所述的实施例范围之中。下列实施例中未注明具体条件的实验方法，按照常规方法和条件，或按照商品说明书选择。下表中，wt.％是指组分在所述R-T-B系永磁材料的原料组合物中的质量百分比，“/”表示未添加该元素。“Br”为剩余磁通密度，“Hcj”为内禀矫顽力(intrinsic coercivity)。各实施例1～45和对比例46～49中的钕铁硼磁体材料的原料组合物的配方如下表1所示。
表1钕铁硼磁体材料的原料组合物的配方(wt.％)
Figure PCTCN2020100588-appb-000001
Figure PCTCN2020100588-appb-000002
实施例1
含镨和铝的钕铁硼磁体材料的制备方法如下：
(1)熔铸：按表1所示的各实施例和对比例的原料组合物的配方，将配制好的原料放入氧化铝制的坩埚中，在高频真空感应熔炼炉中且在5×10 -2Pa的真空中，以1500℃以下的温度进行真空熔炼。在真空感应熔炼后的熔炼炉中通入Ar气体使气压达到5.5万Pa后，进行铸造，并以10 2℃/秒-10 4℃/秒的冷却速度获得急冷合金。
(2)氢破粉碎：在室温下将放置急冷合金的熔炼炉抽真空，然后向氢破用炉内通入纯度为99.9％的氢气，维持氢气压力0.15MPa；充分吸氢后，边抽真空边升温，充分脱氢；然后进行冷却，取出氢破粉碎后的粉末。
(3)微粉碎工序：在氧化气体含量150ppm以下的氮气气氛下以及在粉碎室压力为0.38MPa的条件下，对氢破粉碎后的粉末进行3小时的气流磨粉碎，得到细粉。氧化气体 指的是氧或水分。
(4)在气流磨粉碎后的粉末中添加硬脂酸锌，硬脂酸锌的添加量为混合后粉末重量的0.12％，再用V型混料机充分混合。
(5)磁场成形过程：使用直角取向型的磁场成型机，在1.6T的取向磁场中以及在0.35ton/cm 2的成型压力下，将上述添加了硬脂酸锌的粉末一次成形成边长为25mm的立方体；一次成形后在0.2T的磁场中退磁。为了使一次成形后的成形体不接触到空气，将其进行密封，然后再使用二次成形机(等静压成形机)，在1.3ton/cm 2的压力下进行二次成形。
(6)烧结过程：将各成形体搬至烧结炉进行烧结，烧结在5×10 -3Pa的真空下以及分别在300℃和600℃的温度下各保持1小时；然后以1040℃的温度烧结2小时；然后通入Ar气体使气压达到0.1MPa后，冷却至室温，即得烧结体。
(7)时效处理过程：烧结体在高纯度Ar气中，以600℃温度进行3小时热处理后升温至550℃的升温速率为3℃/min，冷却至室温后取出。
实施例1～45以及对比例46～49的制备工艺除选用的原料组合物的配方不同以外，制备工艺中的参数与实施例1的制备工艺相同。
实施例50
将实施例1的原料组合物采用Dy晶界扩散法得实施例50的钕铁硼磁体材料，其制备工艺如下：
将表1中编号1按照实施例1的烧结体的制备首先制备得到烧结体，先进行晶界扩散，再进行时效处理。其中时效处理的工艺同实施例1，晶界扩散的处理过程如下：
将烧结体加工成直径为20mm、片料厚度小于3mm的磁铁，厚度方向为磁场取向方向，表面洁净化后，使用Dy氟化物配制成的原料，全面喷雾涂覆在磁铁上，将涂覆后的磁铁干燥，在高纯度Ar气体气氛中，在磁铁表面溅射附着Tb元素的金属，以850℃的温度扩散热处理24小时。冷却至室温，即得。
实施例51
将实施例1的原料组合物采用Dy晶界扩散法得实施例51的钕铁硼磁体材料，其制备工艺如下：
将表1中编号1按照实施例1的烧结体的制备首先制备得到烧结体，先进行晶界扩散， 再进行时效处理。其中时效处理的工艺同实施例1，晶界扩散的处理过程如下：
将烧结体加工成直径20mm、片料厚度小于7mm的磁铁，厚度方向为磁场取向方向，表面洁净化后，分别使用Tb氟化物配制成的原料，全面喷雾涂覆在磁铁上，将涂覆后的磁铁干燥，在高纯度Ar气体气氛中，在磁铁表面溅射附着Tb元素的金属，以850℃的温度扩散热处理24小时。冷却至室温。
效果实施例
测定各实施例和对比例制得的钕铁硼磁体材料的磁性能和成分，通过FE-EPMA观察其磁体的晶相结构。
(1)磁性能评价：磁体材料使用中国计量院的NIM-10000H型BH大块稀土永磁无损测量系统进行磁性能检测。下表2所示为磁性能检测结果。
表2磁性能检测结果
Figure PCTCN2020100588-appb-000003
Figure PCTCN2020100588-appb-000004
Figure PCTCN2020100588-appb-000005
(2)成分测定：各成分使用高频电感耦合等离子体发射光谱仪(ICP-OES)进行测定。下表3所示为各实施例和各对比例的钕铁硼磁体材料的成分检测结果。
表3钕铁硼磁体材料的成分检测结果(wt.％)
Figure PCTCN2020100588-appb-000006
Figure PCTCN2020100588-appb-000007
(3)FE-EPMA检测：将实施例11的钕铁硼磁体材料，采用场发射电子探针显微分析仪(FE-EPMA)(日本电子株式会社(JEOL)，8530F)进行检测。对磁体材料中的Pr，Nd，Al，Zr和O元素进行分析，并对晶界处及晶间三角区的元素进行定量分析。其中：晶界指两个晶粒之间的界限，晶间三角区指三个及三个以上的晶粒所形成的空隙。
由图1可知，Pr、Nd元素主要分布在主相中，晶界处也出现了部分的稀土，元素Al分布于主相中，元素Zr分布于晶界处。如图2所示，为实施例11的钕铁硼磁体材料的晶界处的元素分布图，取图2中1标记的点对晶界处元素进行定量分析，结果如下表4所示：
表4
Figure PCTCN2020100588-appb-000008
从以上的数据可看出，Pr和Nd以富稀土相及氧化物的形式存在于晶界中，分别为α-Pr和α-Nd，Pr 2O 3，Nd 2O 3和NdO，Al除了在主相外晶界处占有一定的含量约为0.2wt.％左右，例如本实施例中的0.19wt.％。Zr作为高熔点元素弥散分布于整个区域。
如图3所示，为晶间三角区的元素分布图，取图3中1标记的点对晶间三角区的元素进行定量的分析结果如下表5所示：
表5
Pr(wt.％) Nd(wt.％) Al(wt.％) Zr(wt.％) O(wt.％) Fe(wt.％)
32.8 42.3 1.38 0.079 1.2 余量
由表5可知，在晶间三角区，Pr及Nd元素分布于其中，在本实施例的配方中，很清楚的发现，在晶间三角区Pr的含量明显相对Nd的含量低，虽然稀土有部分富集于此处，但Pr的富集程度相对Nd要少，这也是高Pr和Al共同作用提高Hcj的原因之一。同时该处含有部分的O及Zr的分布。

Claims (10)

  1. 一种钕铁硼磁体材料的原料组合物，其特征在于，以质量百分比计，其包括如下含量的组分：
    R’：29.5～32.8％，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；
    Al：≥0.5％；
    B：0.90～1.2％；
    Fe：60～68％；
    百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
  2. 如权利要求1所述的原料组合物，其特征在于，所述Pr的含量为17.15～30％，较佳地为17.15％、18.15％、19.15％、20.15％、21.15％、22.85％、23.15％、24.15％、25.15％、26.5％、27.15％或30％；
    和/或，所述Nd与所述R’的总质量的比值小于0.5，较佳地为0.04～0.44；
    和/或，所述Nd的含量在15％以下，较佳地为1.5％、2.45％、3.85％、4.05％、4.55％、4.85％、5.85％、6.65％、6.85％、8.35％、11.65％、11.85％、12.85％或13.85％；
    和/或，所述R’还包括RH，所述RH为重稀土元素；所述RH的种类较佳地包括Dy、Tb和Ho中的一种或多种，更佳地为Dy和/或Tb；较佳地，所述RH和所述R’的质量比小于0.253，更佳地为0～0.08；更佳地，所述RH的含量为0.5～2.7％，较佳地为0.5％、1％、1.2％、1.4％、1.5％、1.7％、1.9％、2.1％、2.3％或2.7％；较佳地，当所述的RH中含有Tb时，所述Tb的含量为0.5～2wt.％，更佳地为0.5％、0.7％、0.8％、0.9％、1％、1.2％、1.5％、1.6％、1.8％或2％；较佳地，当所述RH中含有Dy时，所述Dy的含量在0.5wt.％以下，更佳地为0.1％、0.2％、0.3％或0.5％；当所述的RH中含有Ho时，所述Ho的含量较佳地0.8～2％；
    和/或，所述Al的含量为0.5～3wt.％，较佳地为0.5％、0.6％、0.8％、0.9％、1％、1.1％、1.2％、1.3％、1.4％、1.5％、1.6％、1.7％、1.8％、1.9％、2.0％、2.1％、2.2％、2.3％、2.5％、2.7％、2.8％、2.9％或3％；
    和/或，所述B的含量为0.95～1.2％，较佳地为0.95％、0.96％、0.98％、0.985％、0.99％、1％、1.1％或1.2％；
    和/或，所述Fe的含量为60～67.515％，较佳地为60.03％、62.76％、62.96％、63.145％、63.735％、63.885％、63.935％、64.04％、64.265％、64.315％、64.57％、64.735％、64.815％、64.865％、64.97％、64.985％、65.015％、65.065％、65.115％、65.135％、65.265％、65.315％、65.385％、65.515％、65.56％、65.665％、65.715％、65.765％、65.815％、65.85％、65.985％、65.915％、65.9655％、65.995％、66.065％、66.115％、66.165％、66.215％、66.315％、66.465％、66.515％、66.665％、66.715％、66.75％、66.815％、66.915％、67.115％、67.215％、67.315％、67.4％、67.415％、67.515％；
    和/或，所述的钕铁硼磁体材料的原料组合物中还包括Cu；较佳地所述Cu的含量为0.1～1.2％，更佳地为0.1％、0.35％、0.4％、0.45％、0.48％、0.5％、0.55％、0.6％、0.65％、0.7％、0.75％、0.8％、0.85％、0.9％、1％或1.1％；
    和/或，所述的钕铁硼磁体材料的原料组合物中还包括Ga；较佳地，所述Ga的含量在0.45wt.％以下，更佳地为0.05％、0.1％、0.2％、0.25％、0.3％、0.35％或0.42％；
    和/或，所述的钕铁硼磁体材料的原料组合物中还包括N；较佳地，所述N的种类包括Zr、Nb、Hf或Ti；其中，所述Zr的含量为0.05～0.5％，更佳地为0.1％、0.2％、0.25％、0.28％、0.3％或0.35％；
    和/或，所述的钕铁硼磁体材料的原料组合物中还包括Co；较佳地，所述Co的含量为0.5～3％，更佳地为1％或3％；
    和/或，所述的钕铁硼磁体材料的原料组合物中还包括O；较佳地，所述O的含量在0.13％以下；
    和/或，所述的钕铁硼磁体材料的原料组合物还可包括Zn、Ag、In、Sn、V、Cr、Mo、Ta和W中的一种或多种；较佳地，所述Zn的含量为0.01～0.1％，更佳地为0.02％或0.05％；较佳地，所述Mo的含量为0.01～0.1％，较佳地为0.02％或0.05％。
  3. 如权利要求1或2所述的原料组合物，其特征在于，以质量百分比计，其包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；
    较佳地，所述Pr的含量为17.15～30％；较佳地所述Al的含量为0.5～3％；较佳地所述Cu的含量为0.35～1.3％；较佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的 含量较佳地为1～2.5％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
  4. 如权利要求1或2所述的原料组合物，其特征在于，以质量百分比计，其包括如下含量的组分：R’：29.5～32.8％，所述R’为稀土元素，所述R’包括Pr和Nd；其中，所述Pr≥17.15％；Al：≥0.5％；Ga≤0.42％；Cu：≤1.2％；Zr：0.25～0.3％；B：0.90～1.2％；Fe：60～68％；
    较佳地，所述Pr的含量为17.15～30％；较佳地所述Al的含量为0.5～3％；较佳地，所述Cu的含量为0.35～1.3％；较佳地所述R’还包括RH，所述RH为重稀土元素，所述RH的含量较佳地为1～2.5％，所述RH的种类较佳地为Dy和/或Tb，其中，所述Tb的含量较佳地为0.5～2％；百分比为占所述钕铁硼磁体材料的原料组合物总质量的质量百分比。
  5. 一种钕铁硼磁体材料的制备方法，其特征在于，其采用权利要求1-4中任一项所述的原料组合物制得；
    较佳地，所述的制备方法包括以下步骤：将权利要求1-4中任一项所述的原料组合物的熔融液经熔铸、氢破、成形、烧结和时效处理，即可；
    更佳地，所述烧结之后、所述时效处理之前，还进行晶界扩散处理。
  6. 一种钕铁硼磁体材料，其特征在于，其采用权利要求5所述的制备方法制得。
  7. 一种钕铁硼磁体材料，其特征在于，以质量百分比计，其包括如下含量的组分：
    R’：29.4～32.8％，所述R’包括Pr和Nd；其中，所述Pr≥17.12％；
    Al：≥0.48％；
    B：0.90～1.2％；
    Fe：60～68％；百分比为占所述钕铁硼磁体材料总质量的质量百分比。
  8. 如权利要求7所述的钕铁硼磁体材料，其特征在于，所述Pr的含量为17.12～30％；较佳地为17.12％、17.13％、17.14％、17.15％、18.13％、18.14％、18.15％、18.16％、19.12％、19.14％、20.05％、20.13％、20.14％、21.12％、21.13％、21.14％、21.15％、21.16％、23.11％、23.12％、23.13％、13.15％、24.16％、25.12％、25.13％、25.14％、25.16％、25.17％、26.52％、27.15％或30％；
    和/或，所述Nd的含量在15％以下，较佳地为1.5～14％，更佳地为1.5％、2.45％、3.83％、3.84％、3.86％、3.89％、4.03％、4.52％、4.82％、4.83％、4.84％、4.86％、4.87％、5.84％、 6.82％、6.83％、6.84％、6.86％、8.33％、8.34％、8.35％、8.36％、11.55％、11.63％、11.64％、11.66％、11.85％、12.82％、12.83％、12.84％、12.85％、12.89％、13.81％、13.82％、13.84％或13.85％；
    和/或，所述R’还包括RH，所述RH为重稀土元素；所述RH的种类较佳地包括Dy、Tb和Ho中的一种或多种，更佳地为Dy和/或Tb；较佳地，所述RH和所述R’的质量比小于0.253，较佳地为0～0.08；更佳地，所述RH的含量在3％以下，较佳地为0.4～3％，更佳地为0.48％、0.51％、0.56％、1％、1.02％、1.03％、1.04％、1.19％、1.21％、1.25％、1.42％、1.43％、1.52％、1.7％、1.71％、1.72％、1.91％、2.13％、2.33％、2.69％或2.71％；当所述RH中含有Tb时，所述Tb的含量较佳地为0.5～2.1％，更佳地为0.51％、0.56％、0.69％、0.71％、0.81％、0.83％、0.88％、0.9％、1％、1.01％、1.02％、1.03％、1.04％、1.2％、1.21％、1.5％、1.58％、1.59％、1.6％、1.8％、2.01％或1.02％；当所述RH中含有Dy时，所述Dy的含量较佳地在0.51％以下，更佳地为0.11％、0.12％、0.13％、0.19％、0.21％、0.22％、0.23％、0.29％、0.31％、0.32％、0.48％、0.49％或0.51％；当所述的RH中含量Ho时，所述Ho的含量较佳地为0.2～8％；
    和/或，所述Al的含量为0.48～3％，较佳地为0.48％、0.49％、0.58％、0.6％、0.61％、0.8％、0.82％、0.83％、0.89％、0.9％、0.91％、0.92％、1.01％、1.02％、1.03％、1.04％、1.09％、1.21％、1.22％、1.23％、1.31％、1.42％、1.49％、1.51％、1.52％、1.53％、1.62％、1.63％、1.7％、1.79％、1.81％、1.82％、1.9％、1.91％、1.92％、2.01％、2.02％、2.03％、1.12％、2.21％、2.3％、2.31％、2.52％、2.71％、2.91％或2.98％；
    和/或，所述B的含量为0.95～1.2％，较佳地为0.951％、0.962％、0.981％、0.982％、0.983％、0.984％、0.985％、0.986％、0.99％、0.998％、1.03％或1.11％；
    和/或，所述Fe的含量为59.9～67.7％，较佳地为59.932％、62.8％、62.88％、63.136％、63.896％、64.029％、64.234％、64.266％、64.566％、64.799％、64.897％、64.915％、64.985％、64.987％、65.084％、65.096％、65.146％、65.264％、65.299％、65.309％、65.327％、65.347％、65.385％、65.514％、65.524％、65.548％、65.664％、65.665％、65.689％、65.779％、65.829％、65.867％、65.877％、65.896％、65.944％、66.019％、66.047％、66.174％、66.236％、66.249％、66.327％、66.386％、66.496％、66.534％、66.964％、66.699％、66.73％、66.847％、66.917％、 67.029％、67.088％、67.115％、67.216％、67.224％、67.315％、67.426％、67.45％、67.526％、67.587％或67.607％；
    和/或，所述的钕铁硼磁体材料中还包括Cu；较佳地，所述Cu的含量在1.2％以下，更佳地为0.11％、0.34％、0.35％、0.4％、0.41％、0.45％、0.5％、0.51％、0.55％、0.6％、0.63％、0.65％、0.72％、0.75％、0.81％、0.85％、0.91％、1.02％、1.03％、1.04％或1.11％；
    和/或，所述的钕铁硼磁体材料还包括Ga；较佳地，所述Ga的含量在0.42％以下，更佳地为0.05％、0.1％、0.2％、0.23％、0.25％、0.251％、0.31％、0.34％、0.36％、0.41％、0.42％、0.43％或0.44％，更佳地为0.05％、0.1％、0.2％、0.23％、0.25％、0.251％、0.31％、0.34％、0.36％、0.41％、0.42％、0.43％或0.44％；
    和/或，所述的钕铁硼磁体材料还包括N，所述N的种类较佳地包括Zr、Nb、Hf或Ti；较佳地，所述Zr的含量较佳地为0.05～0.5％，更佳地为0.1％、0.11％、0.2％、0.22％、0.24％、0.25％、0.27％、0.28％、0.3％、0.31％、0.32％、0.34％、0.35％、0.36％、0.37％或0.38％；
    和/或，所述的钕铁硼磁体材料中还包括Co；较佳地，所述Co的含量为0.5～3.5％，较佳地为1％或3.03％；
    和/或，所述的钕铁硼磁体材料中还包括O，所述O的含量较佳地在0.13％以下；
    和/或，所述的钕铁硼磁体材料还可包括Zn、Ag、In、Sn、V、Cr、Mo、Ta和W中的一种或多种；其中，所述Zn的含量可较佳地为0.01～0.1％，更佳地为0.03％或0.04％；所述Mo的含量较佳地为0.01～0.1％，更佳地为0.02％或0.06％。
  9. 一种钕铁硼磁体材料，其特征在于，在所述钕铁硼磁体材料的晶间三角区中，Pr和Al的总质量与Nd和Al的总质量的比值≤1.0；
    在所述钕铁硼磁体材料的晶界处，Pr和Al的总质量与Nd和Al的总质量的比值≥0.1；
    较佳地，所述钕铁硼磁体材料的组分为如权利要求6-8中任一项所述的钕铁硼磁体材料。
  10. 一种如权利要求6-9中任一项所述的钕铁硼磁体材料在电机中作为电子元器件的应用。
PCT/CN2020/100588 2019-11-21 2020-07-07 钕铁硼磁体材料、原料组合物及制备方法和应用 WO2021098225A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/639,366 US20220336127A1 (en) 2019-11-21 2020-07-07 Neodymium-iron-boron magnet material, raw material composition,preparation method therefor and use thereof
KR1020227006968A KR102589802B1 (ko) 2019-11-21 2020-07-07 네오디뮴철붕소 자성체재료, 원료조성물과 제조방법 및 응용
JP2022513460A JP7266751B2 (ja) 2019-11-21 2020-07-07 ネオジム鉄ホウ素磁石材料、原料組成物及び製造方法、並びに応用
EP20889184.6A EP4016557A4 (en) 2019-11-21 2020-07-07 NEODYMIUM-IRON-BORONIC MAGNETIC MATERIAL, RAW MATERIAL COMPOSITION, PROCESS FOR THEIR PRODUCTION AND ITS USE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911150984.0A CN110797157B (zh) 2019-11-21 2019-11-21 钕铁硼磁体材料、原料组合物及制备方法和应用
CN201911150984.0 2019-11-21

Publications (1)

Publication Number Publication Date
WO2021098225A1 true WO2021098225A1 (zh) 2021-05-27

Family

ID=69445685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/100588 WO2021098225A1 (zh) 2019-11-21 2020-07-07 钕铁硼磁体材料、原料组合物及制备方法和应用

Country Status (7)

Country Link
US (1) US20220336127A1 (zh)
EP (1) EP4016557A4 (zh)
JP (1) JP7266751B2 (zh)
KR (1) KR102589802B1 (zh)
CN (1) CN110797157B (zh)
TW (1) TWI751788B (zh)
WO (1) WO2021098225A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110797157B (zh) * 2019-11-21 2021-06-04 厦门钨业股份有限公司 钕铁硼磁体材料、原料组合物及制备方法和应用
CN110993234B (zh) * 2019-12-24 2021-06-25 厦门钨业股份有限公司 高Cu高Al的钕铁硼磁体及其制备方法
CN111524674A (zh) * 2020-04-30 2020-08-11 福建省长汀金龙稀土有限公司 一种钕铁硼磁体材料、原料组合物及制备方法、应用
CN113066625B (zh) * 2021-03-26 2023-04-11 福建省长汀金龙稀土有限公司 一种r-t-b系永磁材料及其制备方法和应用
CN113674944B (zh) * 2021-07-29 2023-10-20 福建省长汀金龙稀土有限公司 一种钕铁硼磁体材料及其制备方法和应用

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077796A (zh) * 2013-02-06 2013-05-01 江苏南方永磁科技有限公司 一种耐蚀钕铁硼永磁材料及其制备方法
CN103366918A (zh) * 2012-03-29 2013-10-23 通用电气公司 永磁体及其制造方法
JP2013225533A (ja) * 2012-03-19 2013-10-31 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石の製造方法
CN104064346A (zh) * 2014-05-30 2014-09-24 宁波同创强磁材料有限公司 一种钕铁硼磁体及其制备方法
CN105513737A (zh) * 2016-01-21 2016-04-20 烟台首钢磁性材料股份有限公司 一种不含重稀土元素烧结钕铁硼磁体的制备方法
CN106128673A (zh) * 2016-06-22 2016-11-16 烟台首钢磁性材料股份有限公司 一种烧结钕铁硼磁体及其制备方法
JP2018056334A (ja) * 2016-09-29 2018-04-05 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
JP2019169542A (ja) * 2018-03-22 2019-10-03 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
CN110797157A (zh) * 2019-11-21 2020-02-14 厦门钨业股份有限公司 钕铁硼磁体材料、原料组合物及制备方法和应用

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01222406A (ja) * 1988-03-01 1989-09-05 Hitachi Metals Ltd 熱安定性の良好な永久磁石
US5395458A (en) * 1992-05-21 1995-03-07 General Motors Corporation Method to enhance the thermomechanical properties of hot-formed magnets and magnets formed thereby
JPH06112026A (ja) * 1992-09-24 1994-04-22 Hitachi Metals Ltd 熱安定性と耐食性の良好な永久磁石およびその製造方法
JPH06302417A (ja) * 1993-04-15 1994-10-28 Seiko Epson Corp 永久磁石およびその製造方法
JPH08273914A (ja) * 1995-03-31 1996-10-18 Seiko Epson Corp 希土類磁石およびその製造方法
US7442262B2 (en) * 2001-12-18 2008-10-28 Showa Denko K.K. Alloy flake for rare earth magnet, production method thereof, alloy powder for rare earth sintered magnet, rare earth sintered magnet, alloy powder for bonded magnet and bonded magnet
CN1697093A (zh) * 2004-05-10 2005-11-16 速敏科技股份有限公司 含镨磁性材料
US20070137733A1 (en) * 2005-12-21 2007-06-21 Shengzhi Dong Mixed rare-earth based high-coercivity permanent magnet
WO2008139559A1 (ja) 2007-05-02 2008-11-20 Hitachi Metals, Ltd. Ｒ－ｔ－ｂ系焼結磁石
CN106448985A (zh) 2015-09-28 2017-02-22 厦门钨业股份有限公司 一种复合含有Pr和W的R‑Fe‑B系稀土烧结磁铁
CN107887091A (zh) * 2017-11-15 2018-04-06 宁德市星宇科技有限公司 一种含镝钕铁硼磁体及其制备的方法
CN108730086A (zh) * 2018-04-09 2018-11-02 安徽宝隽机车部件有限公司 一种燃油泵磁瓦及燃油泵

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225533A (ja) * 2012-03-19 2013-10-31 Hitachi Metals Ltd Ｒ−ｔ−ｂ系焼結磁石の製造方法
CN103366918A (zh) * 2012-03-29 2013-10-23 通用电气公司 永磁体及其制造方法
CN103077796A (zh) * 2013-02-06 2013-05-01 江苏南方永磁科技有限公司 一种耐蚀钕铁硼永磁材料及其制备方法
CN104064346A (zh) * 2014-05-30 2014-09-24 宁波同创强磁材料有限公司 一种钕铁硼磁体及其制备方法
CN105513737A (zh) * 2016-01-21 2016-04-20 烟台首钢磁性材料股份有限公司 一种不含重稀土元素烧结钕铁硼磁体的制备方法
CN106128673A (zh) * 2016-06-22 2016-11-16 烟台首钢磁性材料股份有限公司 一种烧结钕铁硼磁体及其制备方法
JP2018056334A (ja) * 2016-09-29 2018-04-05 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
JP2019169542A (ja) * 2018-03-22 2019-10-03 日立金属株式会社 Ｒ−ｔ−ｂ系焼結磁石の製造方法
CN110797157A (zh) * 2019-11-21 2020-02-14 厦门钨业股份有限公司 钕铁硼磁体材料、原料组合物及制备方法和应用

Also Published As

Publication number Publication date
US20220336127A1 (en) 2022-10-20
JP2022542187A (ja) 2022-09-29
CN110797157B (zh) 2021-06-04
KR20220041191A (ko) 2022-03-31
TWI751788B (zh) 2022-01-01
JP7266751B2 (ja) 2023-04-28
EP4016557A4 (en) 2022-10-12
TW202121451A (zh) 2021-06-01
EP4016557A1 (en) 2022-06-22
CN110797157A (zh) 2020-02-14
KR102589802B1 (ko) 2023-10-13

Similar Documents

Publication Publication Date Title
WO2021098224A1 (zh) 钕铁硼磁体材料、原料组合物及制备方法和应用
WO2021098225A1 (zh) 钕铁硼磁体材料、原料组合物及制备方法和应用
JP7379362B2 (ja) 低Ｂ含有Ｒ－Ｆｅ－Ｂ系焼結磁石及び製造方法
WO2021098223A1 (zh) 钕铁硼磁体材料、原料组合物及制备方法和应用
WO2015149685A1 (zh) 一种含W的R‐Fe‐B‐Cu系烧结磁铁及急冷合金
WO2021135144A1 (zh) 一种钕铁硼永磁材料、制备方法、应用
WO2021114648A1 (zh) 一种r-t-b系永磁材料、原料组合物、制备方法、应用
CN111326306A (zh) 一种r-t-b系永磁材料及其制备方法和应用
CN112992463A (zh) 一种r-t-b磁体及其制备方法
CN112086255A (zh) 一种高矫顽力、耐高温烧结钕铁硼磁体及其制备方法
JP5757394B2 (ja) 希土類永久磁石の製造方法
TWI750964B (zh) R-t-b系永磁材料、原料組合物、製備方法、應用
TWI742969B (zh) R-t-b系永磁材料、原料組合物、製備方法、應用
WO2016155674A1 (zh) 一种含有Ho和W的稀土磁铁
WO2021147908A1 (zh) 一种R-Fe-B系烧结磁体及其晶界扩散处理方法
EP4354471A1 (en) Auxiliary alloy casting piece, high-remanence and high-coercive force ndfeb permanent magnet, and preparation methods thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20889184

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022513460

Country of ref document: JP

Kind code of ref document: A

Ref document number: 20227006968

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020889184

Country of ref document: EP

Effective date: 20220315

NENP Non-entry into the national phase

Ref country code: DE